1980年6月から1982年12月までのセントヘレンズ山の噴火を予測しています
Science (New York, N.Y.)
|September 30, 1983
まとめ
セントヘレンズ山の噴火は,地震性と地形変形を用いて数時間から数週間前に予測されました. この火山噴火の予測能力は,安全性を高め,土地利用の計画に情報を提供した.
科学分野:
- 地質学 地質学 地質学
- 火山学 火山学とは
- 地震学 地震学とは
背景:
- セントヘレンス山は,1980年から1982年の間に数多くの噴火を経験しました.
- 火山活動の予測は,公衆の安全と資源管理にとって極めて重要です.
研究 の 目的:
- セントヘレンズ山の噴火の予測方法の有効性を分析する.
- 火山イベントに関連するリードタイムと前駆者を評価する.
主な方法:
- 前駆的な地震性 (地震活動) を監視する.
- クレーター床と溶岩ドームの地形変形を追跡する.
- ガス排出量を分析する.
主要な成果:
- 1980年から1982年の間に13回の噴火が予測された.
- 初期の予測は数時間前であったが,後の予測は3日から3週間であった.
- 地震性,ドーム変形,ガス排出は,重要な指標でした.
結論:
- 火山噴火の予測は,複数の監視技術を使用して実現可能である.
- 改善された予測能力は,生命や財産に対するリスクを大幅に軽減します.
- 予測データは,危険な火山地帯における土地利用計画を導くことができます.
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